Molding-machine.



Na. 668,263. Patented Feb. I9, 1901.

- J. w. MURRAY &. c. w. FIELD.

MOLDING MACHINE.

' (Application flXed Sept. 15, 1900.) (No Model.)

2 Sheets-Shoat i.

' Patented. Feb l9, I90l. J. W. MURRAY & C, W. F|ELD..

MOLDING MACHINE.

Application filed. Sept. 15, 1900A 2 Sheets-Sheet 2 (No Model.)

rrnn

h rer-rite .lOllN \V. .lll llliAY AND CYRUS W. l llflilii, Oh 'lilhhll lt), Milli).

MOLDlMG MACMlME.

SPECIFICATION formingrpart of Letters Patent No. 668,263, dated February 19, 1901 .hpplication filed September 15,1900. Serial No. 30,122. the model scribed a machine: of the kind in which the portions of the patterns neoessaryto be withdrawn fromthe hand before the main body portion-can be drawn therefrom are integral with plates set in. ways or guide-bars, along which they may be mechanically projected through slots in the pattern orstripping plate, into proper position to eomplete the patterns and readily withdrawn from the impacted sand without injury to the impressions of the patterns. VVithont d epartingfrom this principle of our said invention, the objects of our present invention are, first, to provide ready means of adjustment of the guide-bars to the slots; second, to provide improved means of projecting and withdrawing the movable portions of the patterns along their guide-bars; third, to provide ready means of securely clamping the flask tothe pattern-plate while being invertet'l; fourth, to utilize the draw plates as a means for locking the patternplate to the top of the casing, and finally to facilitate the operation and increase the chiciency of the machine. We accomplish these objects hereinafter set forth, and illustrated in the accompanying drawings, where- Figure 'l is an isometric view of our invention, showingr a stripping-plate with duplicat-e patterns for the top side of. a plowshare with the movable portions of the patterns set and locked/1n position and with the fiaslo. clamps openand. the lower flELSkfSGGhlOD in position as deposited on the flask-supports by turningthertripping-plateonitshinges. Fig. 2 is a simiiarview of a stripping-plate having duplicate patterns in corresponding position to thosnot the stripping-plate of Fig. 1 ofthe hetioin side eta piowehate. Fig. 3 is a nimilarvie wof afiaslr-seetion for the stripping-plate shown in Fig.

2. Fig. i is a plan view of the machine with the strippingplate reversed on its hinges. Fig. 5 is a cross-sew tion through line .1: .r of Fig. l with the strip ping-plate in position on top of the casing and the flash-section in position on the strippingplate and showing side elevation of toothed segments in position to set the movable portions of the patterns. Fig. 6 is a similar view through line y y of Fig. 4, showing side ele vation of flask-clamps in position clamping the flask to the stripping-plate and of its operating mechanism and also showing-a movable pattern-plate withdrawn. Fig. 7'is an isometric view of a bracket For supporting the guide-bars for the movable pattern-plates, showing means for adjusting the guide-bars. Fig. 8 shows an elevation of a movable pattern-plate detached from the ways. Fig. 9 shows a modified term of the same, and Figs. 10 and 11 show modified forms of clamp mechanism.

Similar letters and numerals refer to similar parts throughout the several views.

A is the machine-casing, having a stripping- -plate l, which is hinged to the top of the casing by hinges 2 2 and forms a top cover therefor.

3 are parallel horizontal bars secured to and projecting from the side of the casing to which the stripping-plate 1 is hinged and form supports to receive the flash.

4 is a dowel-pin in the rim of the casing opposite the hinges, and 5 is an orifice in the edge of the stripping-plate l to receive the pin and accurately seat the plate on the casing.

Strippingplate 1 is a solid metal plate having molded or formed thereon in inverse position duplicate patterns (3 of the top portion of a plowshare, which are provided with inclined rectangular slots 7, out through the stripping-plate in the edge ot the patterns, through which are projeotedtrom the reverse side of the stripping-plate the pattern portions 8, formed on draw-plates 9, the pattern portions 8 being adapted to form the hiclined projections of the patterns necessary to be withdrawn from the sand before the body portion. of the patterns can he drawn therefrom.

For the QLHPW") hereinafter stated patterns casing.

l8, journaled 8955111611133 27 and racks of the plate.

1 form ofjplamp mechanism,

6 are so disposed on stripping-plate 1 as to bring slots 7 parallel with each otherand with the edge of the plate that is hinged to the 10 is a chill-plate imposed between the two patterns 6 and resting upon the share and point portions thereof.-

Plate 1 is also provided with oppositely-dis posed dowel-pins 11, a, handle 12, and flaskclamps 13, pivoted'near their lower ends to brackets 14, oppositely secured to the top side The clamps are provided with heads at their top ends, adapted to engage the tpp of the flask, and lower end portions 16, engaging earns 17 on a horizontal shaft in hangers 19, secured to the under side of stripping-plate 1. Clamps 13 are also provided with springs 20, tending to hold the clamps normally open,"as in Fig; 1. One end of shaftlS is extended beyond the edge of. plate 1 through an open slot in easing A and is provided with cams '17 are inversely mounted on opposite ends of shaft 18, so that when the'lever 21 is in position, as shown in Fig. l, the clamps 13 are in the open position shown in the same figure. When this lever .is thrown over to the right, the earns 17 force the lower end portions 16 of the clamps sim ultaneonsly outward and the heads 15 inward until they are in contact with the flask, as shown in Fig. '6.

In Figs. 10 and 11 are showp a modified wherein involute cams l7 having beaded threads 17", are substitutedfor the cams 17, and clamps 13, having elongated pivot-slots 13 and lower end portions 13,- incut to receive the beaded threadl7 are substituted for the clamp 13 and its spring 20. The initial movemen ts of the respective clamps produced by their respeetive cams are the same; but after the clamp 13 has reached the position shown in full lines in Fig. 10 from the position shown in dotted lines in the last half of the movementot' lever 21 the cam 17 draws the clamp 13 vertically downward, by which means the clamp is not only utilized to hold the flask in position on the stripping-plate, as hereinafter described, but also to pack the sand therein by compressing the cover, thus accomplishing both purposes by the same means in one operation. v p

' Draw-plates 9 are adapted to move along inclined guide-bars 22, which are adjustably secured in alinemont with slots 7 by bolts 23 through elongated orifices 24 in brackets 25, which are secured to easing A. Draw-plates S) are also provided with racks 26, having teeth adapted to intermesh with the toothed segments 27, secured on the horizontal shafts 28, journaldd in the sides of easing A parallel with the plates 9 and geared together by toothed segments 29, one of the shafts 28 being provided with'a lever 30 a means of simultaneously rocking the shafts'28 in opposite directions, and thereby by means of 26 simultaneously pro jeeting or withd rawing .portions 8 in such a lever 21. Thepattern portions 8 through slots 7 in plate 1. Lever 30 is provided with a spring-latch 31, adapted when the lever has been raised far enoughto project the pattern portions 8 to their required positions in the patterns 6 to engage a notch or ledge 32 inorsecnred to'thc casing and lock the lever, and thereby lock the pattern position, plates 9 being provided with shoulders 33, adapted to abut the stripping-plate 1 and limit movement of the the lever 30.

34 is the lower sect-ion provided with ears 35, project ing oppositely from the top of the section, having orifices 36, adapted to receive the dowel-pins ll-of stripping-plate 1 when the section is inverted thereon and is also: provided with a bottom 37, having a ledge 38, adapted to-seat on the rim of the flask. v i I 39 is the upper section of the flask and is provided with handles'40,' projecting opposite from the sides and with ears 41 projecting opposite from the bottom edge, corresponding in position with the ears 35 of the lower section. The-ears 41 are provided with dowel-pins 42, .adapted to fit into the-orifices 36 of the ears of the lower flask-section when the sections are joined. 1 Section 39 is preferably provided with the bridge 43, adapted to frictionally support the central portion of the sand when packed in the flask.

Upon a suitable base 18 isseeured a stripping-plate 44, having formed thereon duplicate patterns of the bottom side of a plowthe upward plates 9 and the throw of of the flask and is share in position to correspond with the patterns of stripping-plate 1. Stripping-plate 14 is provided with ears 46 in position to correspond with cars 41 of the upper flask-section, and ears 46 are providedfwith' orifices 47, adapted to receive the dowel-pins 42 of cars 41 when the flask-section 3;) is in proper position on the stripping-plate 4'1. Stripping- -plate 44 is also provided with suitable gate- )ins and orifices therefor at )10 ier places in I the patterns. (Not shown.)

\Vhen the stripping-plate 1 is in position, as shown in Fig. 1, with thelchill-platu 10 im- .posed on patterns ti and with the lever 30 locked in position to project the pattern portions 8 and the lever ii in position to open the clamps, the lower section 54 of a flash with the bottont37 removed is inverted and seated on the stripping-plate .1,with the dowelpins 11 in orifices 36. The flask-section is then filled withsand,

the bottom 37 is placed in position and forced by pressure until its ledge 38 is seated on the rim of the flask, thereby packing the sand. Lever 21 is thenthrown from its position, as shown in Fig. 1, a half-revolnition until cams l7 compress the heads of clamps l3 tightly down upon the flask, as shown in Fig. 6. '1 ins secured the spring-latch 31 is released and lever 301s moved .down ward until the and any surplus beingfirst st ruck oif level with the edge of the flask the clamp and stripping-plate 1 isagain li ftcd by handle 12, thereby WithdrawiIn, thetpatterns G from the sand, and the plate tnrned back on top of casingA in position to receive another flask, and the lower section of the .iiask. is left supported on the bars 3 in position to receive the upper section. The up per flask-section 39 being set in position, as described, on stripping-plate at, with gatepins in position, the operation of filling and packing the sand therein may bcconductcd simultaneously with that of the lower section, and after removing the gate-pins the u pper flask-section may then be lifted by handles 40 and without turning" set on top of the lower il-aslcsection with the dowel-pins 42 in the orifices lit], in which position the mold is complete, and the sections may then be clamped together and the llaslcremoved for filling.

By having the guide-bars 22 made adjustable imperfect alincmcn t of the draw-plates withthc slots may be readily corrected, and the same machine may be used withditlcrent strippinp and draw plates having slight variations of patterns required for special plows.

Plates 9 may be provided with a central rack, as in l ig. 8, or with end racks, as in Fig. 9, and the shafts 28 with segments in termeshiug' with them, The latter form is preferred as better insuring equal movement of the ends of the plates and preventing binding in the guide-bats.

It is apparent that by so locating the patterns on the stripping-plate as to bring the slots 7 parallel with its hinged edge the pattern portions 8 of plates 9 when projected will operate as lot-ks for the stripping-plate and render a special lock to prevent premature or accidental movement. of the stripping plate unnecessary.

It is apparent. also that by means of the luv provements herein shown and described the operation oi the machine is greatlyfacilitated and its eliiciency increase I Having thus fully desci ll our invention and its operation, what we claim tobe new, and desire to secure by Letters Patent, is-

1. In a moldii'lg-machine, the combination of a stripping-plate mounted on asupport and having patterns formed thereon, inclined slots cut through thestrippingplate, inclined guide'bars secn red to thejsupport, 11163113 10 I adjust the inclination of the guide-bars to the inclination of the slots, draw-plates movable along the guide-bars and having pattern portions adapted to be projected through the slots and form inclined projections of the patterns, and mechanical means to move the plates along the guide-bars, to project their pattern portions and. setf fiiem in position to supported by complete the patterns, and towithdraw them in the plane of theirinclination, substantially as shown and described.

2. in a moldinc-machine, the combination of a base, a stripping-plate supported on the base, having a pattern formed thereon, provided with an inclined slot cut through the stripping-plate, brackets secured to the base having elongated bolt-holes, guide-bars adjustably secured to the brackets by bolts through the bolt-holes in the brackets, in alinemcnt with the plane of" the slots in the stripping-plate, and a draw-plate adapted to move along the guide-bars, and provided with a pattern portion adapted to be projected through the slot in the stripping-plate and set in the pattern, and to be withdrawn therefrom by moving the draw-plate along the guide bars, substantially as shown and described and for the purpose specified.

I In a molding-niacinnc, the (mmbination of a casing, a strippinwplate hinged to the casing and forming a cover therefor having patterns formed thereon, inclined slots cut through the stripping-plate, guide-bars adjustably secured to the casing in alinenient with the inclination of the slots, draw-plates provided with racks and movable along the guidebars, having pattern portions adapted to be projected through the slots to form inclined projections of the patterns, shafts jonrnaled in the sides of the casing, toothed seg m ents secured in the shafts, gearing the shafts to each other and to the racks of the drawplates, a lever secured to one shaft, whereby the shafts may be rocked to'projetzt or, withdraw the pattern portions through the slots, a flask-section adapted to be seated on the stripping-plate, a cover for the (lash-section, clamps attached to the stripping-plate, adapted to secure the flash on its seat while the strippingeplate is turned over on its hinges to invert the hash, and mechanical means at tached to the stripping-plate, adapted to move the clamps into or out of engagement with the flask, substantially as shown and described; 4. In a moldingnnachine, the combination of a casing, a stripping-plate hinged to the casing and forming a cover therefor, having patterns formed thereon provided with inclined slots out through the strippingplate, guide-bars secured to the casing and adjusted to the inclination of the slots, draw-plates bars, havingpattern portions adapted to be I20 and movable alongtt-he gnideprojected through the slots and set in the" patterns,mechanical means adapted to move thedraw-plates and project their pattern por- ,tions t-hrouglrthe SlOiiSvflJldSBh them in the patterns, andtto withdraw them theretrom',a flask v-seotion adapted to be seated on the "strippingrplate, a cover for the flask-section,

a shaft journaled pendently from thestrip ping-plate, came in verseiy mounted on the shaft, clamps pivoted to the strippingplate, hevingheads adapted. to engage the cover of the flask, and lower end portions-adaptcdto engage the cams, whereby, when the shaft our hands this 12th dayof September, A, D.

is rotated in-one direction, the clamps are 1900.

oggened, and in the opposite direction are I J OHN W. MURRAY. cl sed, and their heads pressed on the cover CYRUS W. FIELD.

5 of the flask, and a level" for rotating the shaft, Witnesses:

substantially as shown and described. P. A. MACGAHAN,

. In witness whereof We have hereunto set G. W. HARMON. 

